Hide-fleshing machine



(Model.) 2 Sheets-Shear. 2.

Y J. W. -MCDONALDl Hide FleshingwMaohine. No. 239,522. Patented March29,1881.

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4,4 A "v, f /m IL l .5` i l I UNITED STATES i PATENT OFFICE,

JAMES W. MCDONALD, OF WOBURN,FMASSACHUSETTS.

HIDE-FLESHING MACHINE.

SPECIFICATION forming part of Letters Patent No. 239,522, dated March29, 1881.

Application filed December 17, 1880. (Model.)

To all whom it may concern l Be it known that I, JAMES W. McDoNALD, ofWoburn, in the county ot' Middlesex `and Commonwealth of Massachusetts,have invented acertain new and useful Improvement in Fleshing-Machines,of which the following is a full, clear, and exact description,reference being had to the accompanying drawings, forming a part of thisspecification in explain ing its nature, in which Figure l is a frontelevation; Fig. 2, an elevation of the side to the right of the front;Fig. 3, an elevation of the side to the left of the front; Fig. 4,avertical central section; Fig. 5, a sect-ion of the eshing-rollenlarged;

` Fig. 6, a detail view.

This invention is an improvement in` construction upon that described inLetters Patent granted me, No. 200,078, dated February 5, 1878, andPatent No. 210,797, granted Thos. Wm. Clarke, F. F. Raymond, 2d, andmyself, dated December 10, 187 8, and Patent No. 220,930, granted saidClarke, Raymond, and myself, dated October 28, 187 9, all forimprovement in unhairing and scouring machines; and it consists,first,in a tleshing-roll provided with detachable or removable bladessecond, in a device attached tothe machine for sha-rpening or grindingsaid blades without. removing them from the roll or the roll from themachine, or without stopping the working of the machine; third, in a novel way of gearing the various rolls in order to simplify theconstruction and to improve it; fourth, in the employment of two groovedfeed-rolls in lieu of one, as described in the last-named patent.

The iieshing-roll A is mounted in suitable bearin gs upon the frame a ofthe machine, and it has a series of spiral elevations, c', arrangedtheron in relation to each other, preferably as described in said PatentNo. 210,797. These elevations furnish supports and braces for theremovable or detachable blades a2, which preferably are `made of` steel,and are of the same length and shape as the elevations, but projectoutwardly-from the roll somewhat beyond them. They are bolted orotherwise secured to the elevations or projections, preferably in a wayto be easily removed.

The feed-rolls B B' are identical in construe' tion and operation withthe feed-rolls described in Said Letters Patent Nos. 210,797 and220,93o,

Y with the exception that the upper feed-roll is provided with spiralspreading grooves like those described in the last-named Letters Patent,and for the same purpose.

Beneath the eshing-rollis the pressure-roll G, which preferably has anelastic or yielding surface of rubber, and between the pressureroll andthe lower feed-roll there. is arranged the bed D. These portionscorrespond to like parts in the first two Letters Patent named.

The feed and pressure rolls are run from the fleshing-roll, the saidscouring-roll being provided at one end with the pulley a3, by which itis belted to a pulley on a counter-shaft, and upon the other end withthe small pulley a4,

which is belted by the belt a5 with the large Ythe feed-rolls areseparated, and the supporting or pressure roll is adjusted withreference to the eshing-roll, is similar to that described in LettersPatent No. 210,797. It will be observed, however, that the manner ofgearing the'fleshing, feed, and pressure rolls is an improvement overthat described in said Letters Patent, in that the feed-rolls may beseparated and the pressure-roll moved vertically in relation to theiieshing-roll without any danger of the gear-Wheels becoming disengagedon account of said movement, and this is due to the peculiar relation(represented in Fig. 2) which they bear to each other.

The blade grinding or sharpening device consists of an emery or othergrinding wheel, E, `mounted with a pulley, d, upon a short shaft, d',having bearings in the traversing block d2. This block has a bearing on,or is supported by, the transverse bar d3, and is moved thereon from oneend of the fleshiug-roll to the other IOO by means of the screw-threadedrod or worm d4 and the yoke d5, which forms the connection between theblock and the screw-rod, andwhich `Aengages with the thread of thescrew, as represented. The threaded rod is revolved by means of thepulley d6 and a belt running to a pulley on a counter-shaft. Thethreaded rod has bearings on the projections or posts d"',ex

tending upwardly from the transverse bar, and with the bar it isprovided with vertical adjustment, in relation to the leshing-roll, inthe slotted uprights a8 by means ot' the adjusting-screws di. Upon theend of the traversing movement of the block upon the barin one directionit is reversed by any suitable mechanism, either automatic or otherwise,and moved in the opposite direction.

In grinding or sharpening the bla-des the cross or transverse bar islowered until the grinding-wheel comes in contact with them, and it isthen moved slowly from one end ofthe roll to the other as many times asmay be necessary. In lieu of elevating it from the roll when not in useit may be moved hori- Zontally therefrom either from one of its ends orfrom its working-surface outwardly. This grinding device can be used, ofcourse, with a ileshing-roll in which the working blades or projectionsare cast on the roll, as described in Patent No. 210,797, as well aswith removable blades. I do not intend to confine myself to the specificconstruction ot' parts described for moving the grinding-wheel to andalong the working-roll, but may use any suitable mechanism for thispurpose; neither do I confine myself to the method described ot'attaching the independent blades to the roll or to the form shown, butmay secure them thereto in any other desirable way, and may make them ofany othersuitable shape.

By making the working-blades separate from the roll the working-surfacemay be easily and cheaply renewed without renewing the roll.

In the operation of leshing skins or hides the machine is operated inthe same way as that described in Patent No. 210,797, and the blades maybe ground while the machine is in operation, if desired.

The system of gearing and the feeding-roll may also be used in unhairingand scouring machines.

The spiral working-blades are conversely arranged upon the longitudinalcenter of its circumference, and may be continuous or may be isolated,as represented, and they vary from the spiral elevation described in mysaid Letters Patent in that they are made detachable from the rolls andin that they are sharpcned.

It will be observed that the blades are provided with a sharpened edgeupon the front upper corner, and that the remainder of the upper portionof the bladeis inclined back- Wardly from this edge; and it will also beobserved that the spaces between the blades are so wide and thegrinding-wheel is so arranged that in resharpening the blades thegrindingwheel can be brought to bear upon the upper inclined surfaces ofthe blades.

Having thus fully described my invention, I claim and desire to secureby Letters Patent of the United States-` 1; In a machine for ileshinghides or skins, the working-roll having the series of short sharpenedspiral blades conversely arranged thereon, and bearing the relation toeach other as and for the purposes described.

2. In a machine for flesh-ing skins or hides, the combination of twofeed-rolls, B B', each ot' which is provided with right and left spiralgrooves conversely arranged upon its surface, the bed D, thepressure-roll C, and the working-roll A, all substantially as and forthe purpose set forth.

In a machine for tleshin g skins and hides, the combination of theworking-'roll A, the pressure-roll C, the feed-rolls B B', and theconnecting devices, consisting of the pulleys a4 as, the belt d5, thesmall gear-wheel al, the large gear-wheel a, and the gear-wheels a9 d10all d'2 als a, all-arranged in relation to each other to operate thepressure-roll and feedrolls from the working-roll, substantially asdescribed. Y

4. rIhe combination of the roll A, provided with the blades orprojections a', with the revolving grinding-wheel E, the block d2, thestandards all, the guiding-bar d3, and the setscrews 19, and means forreciprocating said block upon the guiding-bar, all substantially as andfor the purposes described.

5. The combination, in a machine for tleshing skins and hides, of aworking-roll, provided with sharpened spiral elevations or blades, withthe feed-rolls B B', the bed D, and the pressure-roll C, allsubstantially as and for the purposes described.

6. The combination, in a machine for fleshing skins and hides, of aworking-roll, provided with sharpened spiral elevations or blades, withthe feed-rolls B B' and the pressure-roll C, all substantially as andfor the purposes described.

7. The combination, in a machine for liesbing skins and hides, of aworking-roll, provided with spiral elevations or blades,with the bed Dand the pressure-roll C, all substantially as and for the purposesdescribed.

8. The combination, in a working-roll for IOO IIO

IIS

projections conversely arranged on the said JAMES W. MCDONALD.

Witnesses If. IXBAYMOND, 2d,\ A. J. OETTINGER.

